Safety razor blade sharpening roll



Aug. 14, 1934. WOLCQTT 1,970,118

SAFETY RAZOR BLADE SHARPENING ROLL Filed March 8, 1930 Patented Aug. 14, 1934 OFFICE 16 Claims.

This invention relates to safety razor blade sharpening rolls.

The present invention has among its objects to provide improved and simplified means for securing the leather strips on the sharpening rolls against displacement or disconnection. A further object of my invention is to provide such means especially adapted to use in connection with wooden rolls, and also adapted to reenforce the roll and prevent splitting thereof when a journal pin is subsequently driven into the same. A still further object of my invention is to provide an improved roll having my improved means embodied therein and adapted to be very inexpensively made as compared with previous metal rolls, while satisfactorily standing up during assembly and service. These and other objects and advantages of my improvement will, however, h reinafter more fully appear.

In the accompanying drawing, I have shown for purposes of illustration two embodiments which my invention may assume in practice. In the drawing,Fig. 1 shows a plan of the article; Fig. 2 shows a side view; Fig. 3 shows a section through the casing on the plane indicated by the dotted line 3-3 on Fig. 1; Fig. 4 shows a section on the plane indicated by the dotted line 44 on Fig. 1; Fig. 5 shows on larger scale 'a perspective view of the end of one of the rolls and the eyelet disconnected therefrom; Fig. 6 shows a sec tion of the end of a roll with a narrow leather strip secured in place by the eyelet; Fig. 7 shows a side view of a roll, part being in section, with a wide leather strip fastened thereon, and Fig. 8 shows a view of the end of the wide strip that is tucked into the recess and held by the eyelet. 1

The casing which is illustrated has a bottom wall 1 with upwardly curved ends, and side walls 2. The cover flaps have side walls 3 and top walls 4 that at their outer ends are curved downwardly on substantially the same arcs as the ends of the bottom wall of the casing. The flaps turn on pivot studs 5 that extend inward from the sides of the casing.

The lower rolls 6 are mounted on axles 7 that extend inward from the side walls of the casing. Connected with the axle of one of the lower rolls is a crank arm 8 with a handle 9. The upper rolls 10 are mounted on axles 11 that extend through the side walls of the flaps. The rolls are geared together in the well-known manner.

Referring more particularly to the structure of the rolls, it will be noted that the ends of the rolls are bored out toform-cup-shaped recesses 12, and

toiallow the flap ends to turn down over the that the surfaces of the rolls may be provided with spiral grooves 13 which communicate with the recesses 12 through radially disposed aper tures 13'.

Wound spirally on the rolls are strips of leather 14. The ends of the strips are carried into these recesses 12 through the radially disposed apertures 13', and then hollow eyelets 15 are driven therein so that the eyelet shanks or sleeves extend into corresponding enlargements 17' in the outer ends of the bores 17 of the roll and the outer rim portions of the eyelets force the portions of the strips extending through the radially disposed apertures 13' against the inner walls of the latter, while engaging the portions of the strips disposed in the annular recesses 12. After the ends of the strips have been secured in the recesses, usual longitudinally grooved axle pins 16 are driven through the eyelets and into bores 17 in the ends of the rolls in the preferred manner of 5 securing narrow strips. During driving in the pins, the eyelets function to confine the pins and prevent them from expanding the roll, while the grooved exterior of the pins may be embedded in l. the soft metal of the eyelet, all in such manner as 0 to prevent splitting or cracking of the roll at the time that the pins enter the latter, when cracking or splitting is most apt to occur. If wide strips of leather which cover the entire surface of the roll are used, as shown in Fig. '7, the ends 18 of these wide strips may be notched, as shownin Fig. 8, and these notched ends bent over into the cups in the ends of the roll, after which the eyelets are inserted and the axle pins driven in.

In the particular form of sharpener illustrated, which is of the construction described and claimed in my co-pending application Serial No. 434,304, filed March 8, 1930, the cover flaps are thrust upward so as to openthe top of the casing, by springs 19 which are coiled around studs 20, the lower ends of the springs bearing on the bottom of the casing and the upper ends of the springs pressing against the underside of the cover flaps. To retain these flaps closed push buttons 21 may be arranged in the ends of the casing, which push 109 buttons are thrust outward by springs 22 so that the heads 23 of the buttons will engage the inner and lower edges of the ends of the flaps and prevent them from being opened by the thrust of the. springs. Whenthe buttons are pushed inward the heads are disengaged from the flaps so that the springs will throw them open, the flaps having slots 24=that are of sufiicient width shanks of the push buttons.

While the invention is illustrated in connection with a sharpener having spring opening and push button retaining means of the construction of my co-pending application mentioned, it is not limited to this particular type, but may be used for securing the ends of leathers in all types of this class of razor blade sharpeners. Attention further is directed to the fact that, if desired, the spiral grooves 13, shown in Figure 5, may be omitted while continuing to use the radially disposed apertures 13.

By simply cupping the ends of rolls, tucking or folding the ends of the leathers of whatever width used into these cups, and inserting the eyelets into the cups and over the ends of the leathers and then driving the axle pins through the eyelets and into the rolls, the ends of the leathers are securely held so that all liability of their becoming disconnected at any time is eliminated. As a result of this construction, it is also possible to re-enforce the ends of the rolls in such manner as to minimize splitting of the same when the axle or journal pins are inserted, and thereby to enable the use of inexpensive wooden rolls, if desired, in lieu of the metal or composition rolls heretofore used, the outer periphery of the eyelet tending to be embedded when driven, and both alone and with the sleeve providing a very efiective annular re-enforcement securely fastened to the roll, and one which further does not increase the length of the latter. These and other advantages of my improved construction will, however, be clearly apparent to those skilled in the art.

While I have herein, for purposes of illustration, specifically described two forms of my invention, it will be understood that the same is not limited thereto, and may be embodied in other forms without departing from its spirit or the scope of the appended claims.

The invention claimed is:

l. A razor blade sharpener roll having recesses and axial bores in its ends, a leather strip having a body portion wound spirally about said roll and having its ends carried into said recesses, and

re-enforcing means apertured to expose said bores and having a driving fit on the ends of said roll for both resisting splitting of the roll when pins are driven into said bores and securing said strip ends to the roll.

2. A razor blade sharpener roll having recesses and axial bores in its ends, a leather strip having a body portion wound spirally about said roll and having its ends carried into said recesses, re-enforcing means apertured to expose said bores and having a driving fit on the ends of said roll for both resisting splitting of the roll and securing said ends to the latter, and journal pins driven into said bores and projecting axially therefrom.

3. A razor blade sharpener roll having in its ends radially disposed apertures and axial bores adapted to receive journal pins, a leather strip having a body portion spirally wound about said roll and having its ends extending radially inward through said radially disposed apertures, and annular reinforcing means lapping and having a driving fit on the ends of said roll and both pressing said ends of the strip in said apertures longitudinally toward said roll and having apertures coaxial with said bores.

4. A razor blade sharpener roll having in its ends radially disposed apertures and communicating axial apertures, a leather strip spirally wound about said roll and having its ends extending radially inward through said radially disposed apertures, annular means for resisting splitting of the ends of said roll and pressing said ends of the strip longitudinally toward said roll, and journal pins seated in said axial apertures.

5. A razor blade sharpener roll having in its ends radially disposed apertures and axial apertures, a leather strip having a body portion spirally wound about said roll and having its ends extending inward through said radial apertures, and means having a driving fit on said roll ends for both reinforcing the latter against splitting upon the insertion of journal pins in said axial apertures and securing said strip ends to the roll.

6. A razor blade sharpener roll having in its ends radially disposed apertures and axial apertures, a leather strip having a body portion spirally wound about said roll and having its ends extending inward through said radial apertures, means having a driving fit on said roll ends for both reinforcing the latter against splitting upon the insertion of journal pins in said axial apertures and securing said strip ends to the roll, and journal pins driven in said axial apertures.

7. A razor blade sharpener roll having a spiral groove in its body and radial and axial apertures in its ends, an elongated narrow leather strip having its body disposed in said groove and its ends extending inward through said radial apertures, means driven on the ends of said roll securing said strip ends to the roll, and journal pins projecting from said axial apertures.

8. A razor blade sharpener roll having in its ends radially disposed apertures and communicating axial apertures, a leather strip spirally wound about said roll and having its ends extending radially inward through said radially disposed apertures, and annular means on the ends of said roll pressing said ends of the strip longitudinally toward said roll and having axial sleeves extending into said axial apertures.

9. A razor blade sharpener roll having in its ends radially disposed apertures and communicating axial apertures, a leather strip spirally wound about said roll and having its ends extending radially inward through said radially disposed apertures, annular means on the ends of said roll pressing said ends of the strip longitudinally toward said roll and having axial sleeves extending into said axial apertures, and journal pins seated in said axial sleeves.

10. A razor blade sharpener roll having in its ends radially disposed apertures, communicating annular apertures surrounding the axis of the roll, and axial bores disposed co-axially with and within said annular apertures, a leather strip spirally wound about said roll and having its ends extending radially inward through said.

radial apertures and also disposed in said annular apertures, and annular re-enforcing means having a driving fit on the ends of said roll pressing the ends of the strip in said annular apertures against the ends of the roll and having apertures exposing said bores.

11. A razor blade sharpener roll having in its ends radially disposed apertures, axial apertures and communicating annular apertures, a leather strip spirally wound about said roll and having its ends extending radially inward through said radial apertures and also disposed in said annular apertures, annular means on the ends of said roll pressing the ends of the strip in said annular apertures against the ends of the roll and having sleeves disposed in said axial apertures in the ends of the roll, and journal pins driven into said sleeves.

12. A safety razor blade sharpener roll having recesses in its ends, a leather strip having a body portion spirally wound about said roll and having its ends carried into said recesses, and eyelets having hollow shanks having a drive fit in said recesses and outer rim portions securing the ends of said strip therein.

13. A safety razor blade sharpener roll having recesses in its ends, a leather strip having a. body portion spirally wound about said roll and. having its ends carried into said recesses, eyelets forced into said recesses and securing the ends of said strips therein, and axle pins driven through said eyelets into the ends of the roll.

14. A safety razor blade sharpener roll having spiral grooves in its surface and recesses in its ends, a leather strip spirally wound about said roll and having its ends carried into said recesses, eyelets forced into said recesses and securing the ends of the strip therein, and axle pins driven through said eyelets into the ends of the roll.

15. A safety razor blade sharpener roll having axial apertures and surrounding recesses in its ends, a leather strip having a body portion spirally wound about said roll and having notched ends folded into said recesses, and eyelets having a driving fit in said apertures and securing the notched portions of said ends of said strip in said recesses against the ends of said roll.

16. A razor blade sharpener roll having recesses in its ends, a leather strip having a body portion spirally wound about said roll and having angularly disposed notched end portions folded into said recesses, eyelets having a driving fit in said recesses and securing said notched portions of said strip therein, and journal pins disposed in the ends of the roll and projecting axially therefrom beyond said eyelets.

FRANK E. WOLCO'I'I. 

